A cobpokation oe penn



W. A. BOHNE Dec. 17, 1929.

PRESS FOR MOLDED LEATHER ARTICLES Filed Nov. zej 1927 2 Sheets-Sheetkwmwwnu WW Q W Dec. 17, 1929. w. A. BOHNE PRESS FOR MOLDED LEATHERARTICLES 2 Sheets-Sheet 2 Filed Nov. 26, 192'? Patented Dec. 17, 1929 1UNITED STATES PATENT OFFICE WILLIAM A. BOHNE, OF PHILADELPHIA,PENNSYLVANIA, ASSIGNOR TO E. F. HOUGI-I- TON & COMPANY, OF PHILADELPHIA,PENNSYLVANIA, A CORPORATION OF PENN- SYLVANIA PRESS FOR MOLDED LEATHERARTICLES Application filed November 26, 1927. Serial No. 235,895.

plates the provision of a novel form of press adapted to receive themolded article from the molding machine in relatively soft condition,and in whic'h the molded element is subjected to a rapid coolingoperation, While being maintained in its proper molded form.

The invention further resides in certain novel structural features ofthe aforesaid cooling press, as hereinafter set forth and as illustratedin the attached drawings, in which:

Fig. 1 is a plan view .of a press made in accordance with the presentinvention;

Fig. 2 is a front elevation of the machine, partly in section, on theline 2-2, Fig. 1;

Fig. 3 is a rear elevation of the press;

Fig. 4 is a fragmentary section on the line 44, Fig. 3, and

Fig. 5 is a. fragmentary sectional view of the die elements andimmediately associated parts illustrating their relative positionsduring the cooling operation.

With reference to the drawings, the press in a referred form mayconstitute a lower relatlvely fixed housing 1, from each side of whichextends a threaded rod 2 which together form a support for an upper diecarrier 3 and which constitute also guides on which is slidably held alower die carrier 4. The lower die carrier 4 has attachedto the underside thereof a pair of plungers 55, which operate in cylinders 6-6 inthe housing 1. Power may be applied to the lower ends of the cylinders 6through a. pipe 7 to elevate the piston and with it the die carrier 4,and a reverse movement of these parts may be obtained by applying powerto the opposite ends of the cylinders 6 through a pipe 8. These pipesmay be associated with a suitable source of fluio pressure, and may becontrolled by suitable valves (not shown) in obvious manner.

Threaded into the die carrier 3 is a plurality of die-carrying studs 9adjustable vertically and retained in position in the present instanceby nuts 10. Threaded into the lower end of each of the studs 9 isan.adapter element 11 having at its lower end a projecting stud 12 ontowhich the male die elements 13 are threaded, as shown in Fig. 2.

Supported on the lower die carrier 4 is a member 14 having at its edgesan upstanding continuous flange 15 forming a receptacle in which aremounted female dies 16 adapted and positioned to cooperaterespectively'with the male dies 13 suspended from the upper die carrier.In the present instance, the female dies 16 are detachably secured inthe receptacle 14 by means of clamps 17, see Figs. 1 and 2. Annularprojections 18 in the floor of the receptacle 14 fit intocorrespondingly formed grooves or recesses in the under sides of thedies 16 and with the clamps 17 function to retainthese dies firmly fixed.in proper alignment with the respective corresponding male dies 13. Inthe present instance, the member 14 is located and mamtained in positionupon the die carrier 4 by dowels 19.

From the foregoing description, it will be. apparent that when power isapplied through the pipe 7, the pipe 8 functioning at-the time as anexhaust for the upper ends of the cylinders 6, the'plungers 5 will beforced upwardly in the cylinders and will elevate the lower die holder4, thereby bringing the female dies into operative relation I with therelatively fixed male dies 13 on the upper die carrier. Stops areprovided in the form of nuts. 20 on the rods 2 to limit the upwardmovement of the lower die car- 1 ese;

form of a duct 21 for introducing a cooling liquid to the receptacle 14.In the present instance, a part of this duct 21 is secured to thehousing 1. This part includes a valve 22 which controls the flow of thefluid through the duct. The duct 21 includes also a portion attached tothe lower and in the present instance movable die carrier 4, and anintermediate flexible section 23 to permit the inove 'nent between therelatively n ova b-le parts. As shownin Fig.3, the'upper end of the duct21 is made in the form of a goose neck 24. i

The valve 22 is adapted tobe opened antomatically when the die carrier4: is elevated, n th mann P iou y e rib d, t dmi e welihsfiei lte he eptee efis- Fer thi Purp e; 1 Provide an p' et he' e 125 pivoted at 26 tobracket '27 on the valve body. T e inn nd f the lev 26 engese h stern 28of the valve. The outer endof the lever 25 is connected through a Spring29 With lower d eeiri r 4 'W.h ie a rier is" in the normal depressedosition, as

. sh n n is- 3 ef th dr winge, theve 2 ie eee d wh n t e d e er i el Yeh it W ll b epieer et that the le e 2. hr ugh he eehhe t h h rise 29, ea ua d to depress the stern 8 thereby opening the el 22 e d e m t s ebet th re n t e 1 14- 1 0 191 s h th di arri 4 me h elevete th e eli giqei-d 'eh ne s he fle i t t'h r jeept lle In e 'd r o pr v n v flow fthe e nlihs qu d, P evide n the're e t le e erfl v pin-e 0, e e F s- 3ith pip x nd n up ardly t e Pe ht shee .0 th uppe ed of th Henge 5 he hevhs else n ar t fle Qfih m PW e eeriee etreleti elv Sm l ep h e he e eflev P 3 i connected through a flexible duct fl with a pin 35th-rlee'sh' wh h the eee n e'g L qu leer d e h rge- Theeverflew 30 e 9fu' h ep'e f y he. to me n ein the liquidi the r me s a th d ed lev defis the .e e .ef 11. w th eugh th n n Wh n h die eerrier f ie le r-e he hn r l ee i as shown in the drawings, the small aperhlr fu ien s bleed hee rhelet y empty the re eptacle 14L By this means, not only is adesirahle'circulation of the cooling liquid through the receptacle andaround the female dies naintained' gluring the periods that t i er ie 4is l ed, ut i 'eee successive elevation of the carrier from the normaldepressed position the receptacle is empty and in condition forreception of an entirely new andhfresh body of the cooling liquid. J a

The press illustrated the present inetenee i edepheel f i the eee ins offlang p ekiege e the g n r l. f rm il ustrated n section in Figlh, whichshows the low die h lder 4 set the, tee sewe s es s Is th s a clearlyillustrated, the dies are in operative relation and are eiiective tohold under desired compression the previously formed flange packing 34.In operation, the flange packing in relatively soft condition is takenfrom the molding press which may Joe of any desired or standard form,and is placed in the female die 16 of the cooling press which isthen inthe depressed or inoperative position. Power is then applied to elevatethe die carriers; which brings the female die and the contained packingelement into operative relation with the male die, as shown in Fig, .5,Simultaneously with the elevation of the carrier 4, water is admitted tothe re- 4 e r e l th ees'h th P 1192 e P evi y ,die carrier 4, the flowof liquid through th p p .2 i n rr pte hq th e e e nerhre Bl m ihte seet nt rely emrtr th eepte le 4: h p ri ee yde rih li In r er ie f eilitte th r-t e tiee hi t e cooled leather pepkings from the female ilies, Ip evi aeh pf h e thee W ther; ei

e m t n istin f e re 3 p iee ins eh-re gh the he eon e he ee ph e 1 4 ene nt e lv int the ie as l e t e d n sh 27 11, th p esen inetee e, t e ermi 111 he tt m o th re p'te le thre i h whie t 2 exten s i s a ed eseieeeekes y means, of pe kin 3!? ereed into a untersunk recess around 'therod 35 by a threaded;

g ee- 37, The re 3. Whieh is d pted to slide through his seeking he Pieet ere uvgmi hron -h th lever di ee r e 4 end h y ed th I et em t e ef eh se t em g g e e et ve y pe t ef the using when the earrierdepressed; the rod 35 thus being elevated against the under Side e thpeehihs ment eeife ilh etret d in roken h ee in" ig- 2 end 'f rein thelette upw r ly f e? th d e: le et to en ex en rendering withdrawalrelatively easy. The

e e e th f ee i e th u t ei the e ec m n m y he regula e by means be 38hread d into t e e er end f the 39dlh'ov s on is also made, as shown inFig, 4,; i'er hm tlhs h mev me tef the ei ter red end e Pre ent their rte i n, t is eel;- eh s' 111 the pre n me e-nee ef e' eesitudinal slot39in the said red into which roie t the inne end of e e t e threefded stes the die carrier 5L.

It w e e rei ntf et t e were may . H .4 the ievee eehi d fied in use; s.from the eeeeshel. lelesw 1. In a cooling press for molded leatherarticles, the combination with a relatively fixed housing, of an upperdie carrier fixed to said housing, a lower die carrier movable in thehousing, cylinders in the housing, plungers in said cylinders connectedto the movable die carrier, means for introducing fluid pressure to thecylinders, a receptacle mounted on the movahle carrier, a female diemounted in the receptacle and cooperative with the male die to ma1nta1nthe molded article in the desired molded form, a valve-controlled ductentering said receptacle, overflow means in said receptacle fordischarging therefrom any excess liquid enteringdhrough the said pipe,and automatic means for opening the valve to admit the cooling medium tothe receptacle when the movable die carrier is advanced to bring thedies into operative relation and for interrupting the flow of saidmedium when the movable die carrier is retracted.

2. In a cooling press for molded leather articles, the combination witha relatively fixed housing, of an upper die carrier fixed to saidhousing, a lower die carrier movable in the housing, cylinders in thehousing, plungers in said cylinders connected to the movable diecarrier, means for introducing 3O fluid pressure to the cylinders, areceptacle mounted on the movable carrier, a female die mounted in thereceptacle and cooperative with the male die to maintain the moldedarticle in the desired molded form, a valvecontrolled duct entering saidreceptacle,

overflow means in said receptacle for discharging therefrom any excessliquid entering through the said pipe, automatic means for opening thevalve to admit the cooling to medium to the receptacle when the movabledie carrier is advanced to bring the dies into operative relation andfor interrupting the flow of said medium when the movable die carrier isretracted, and means for emptying the receptacle of the cooling mediumwhen the movable die carrier is retracted.

WILLIAM- A. BOHNE.

